Eric buys Donna an engagement ring but then decides they're too young for marriage, unfortunately Donna knows he's bought her a gift and puts him on the spot.

Donna's dad and his partner Joanne are off for a weekend getaway, so Eric and Donna plan a weekend together to prove to themselves that they're adult enough to be engaged. The gang is determined to throw a party at Donna's, and are unforgiving when Donna refuses. Meanwhile, a call from the jeweler makes Kitty think Red is buying her a present, but she finds out the ring is from Eric to Donna while taking 'poor orphan' Hyde shopping for a new coat, which Hyde hates--an Evis-style flashy jacket that looks nothing like Hyde's style. Kitty tries to prevent Red from finding out about the engagement, but Eric lets it slip in anger during one of Red's tirades. The cat's outta the bag--Donna and Eric's engagement is no longer secret.

The Pinciottis learn very quickly that living with Jackie is going to be difficult. Kelso swipes Jackie's panties to taunt Hyde, who has his revenge when Kelso gets a job at the hotel kitchen where Hyde works. Eric receives notice that he must return Donna's engagement ring if he can't make a payment by Friday. His visits to the jewelry store reveal that there's bad blood between Fez and Fenton, the jewelry guy.

Donna decides it's time for the next wedding preparations: choosing a wedding list, to the boys' anger only 'things at the table', nothing they like, and Eric is a wreck after a six hours shopping raid, so eager to take Red's advice: choose so badly she'll declare him shop-incompetent and do it all herself. Alas veteran Kelso gives the game away at first glance, so as punishment Eric must go shop wedding cloths with Jackie, who surprisingly knows how to handle a male shopping-stooge. Meanwhile Kitty and Fez catch Red enjoying reading one of her dirty girls books...

Donna injured her back, but Eric's attempts to tend to her backfires when he only makes things worse; Kelso and Fez search for apartment together.

Fez almost loses his apartment when Jackie floods it. He's ready to say "Good day!" to their co-habitation, but Jackie manages to salvage things by bonding with Fenton, the landlord, over shopping, and convincing him to let them stay. Red and Kitty are concerned over the number of arguments that Hyde and Samantha are having. But when they learn the reason for all the fights, it causes some sparks to fly in their own relationship.